Finding the Third Proportional to 542,540 and 1,178,485

Step by Step Solution

1. Step 1: Write the proportion equation
   542,540 : 1,178,485 = 1,178,485 : x
2. Step 2: Convert to fraction form
   542,540/1,178,485 = 1,178,485/x
3. Step 3: Cross multiply
   542,540x = 1,178,485 × 1,178,485
4. Step 4: Simplify right side
   542,540x = 1,388,826,895,225
5. Step 5: Solve for x
   x = 1,388,826,895,225/542,540
6. Step 6: Final answer
   x = 2,559,860.83